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BookBrower.java
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BookBrower.java
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import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
import java.awt.Container;
import java.util.*;
import java.sql.*;
class BookBrower implements ActionListener
{
JFrame f;
Container cp;
JPanel jpS,jpanelWest;
JButton jbt1,jbt2;//按钮，查询、取消、修改
JLabel label,L; //标签
//定义文本框
JTable table;//用来接收数据库中返回的信息
Object columnName[]={"图书名","图书号","单价","作者","出版社","入库时间"};
Object ar[][] =new Object[80][6];
String sno;
String count="xx";
BookBrower()
{
f=new JFrame();
cp=f.getContentPane(); // 初始化面板、按钮、标签、文本框
jpS=new JPanel();
jpanelWest=new JPanel();
//------------------------------------------------
jbt1=new JButton("确定");
jbt2=new JButton("返回");
//------------------------------------------------
label=new JLabel("<html><font color=#CC00FF size='4'>图书概览</font>",SwingConstants.CENTER);
label.setForeground(Color.blue);
L=new JLabel("书库现在共有图书"+count+"本");
//------------------------------------------------
table=new JTable(ar,columnName);//ar存放表中的数据，columnname表示列名
JScrollPane scrollpane = new JScrollPane(table);
//------------------------------------------------
//布局,添加控件
jpS.add(jbt1);
jpS.add(jbt2);
JPanel jpanel=new JPanel();
jpanel.add(label);
JPanel pp4=new JPanel();
JPanel jpE=new JPanel();
cp.add(jpanel,"North");
JPanel jp=new JPanel();
//jp.add(scrollpane);
JPanel p=new JPanel();//用来放两个表
p.setLayout(new BorderLayout());
p.add(L,"North");
p.add(scrollpane);
cp.add(pp4,"West");
cp.add(p,"Center");
cp.add(jpS,"South");
cp.add(jpE,"East");
//------------------------------------------------
Toolkit kit=Toolkit.getDefaultToolkit();
Dimension screen=kit.getScreenSize();
int x=screen.width; /*取得显示器窗口的宽度*/
int y=screen.height; /*取得显示器窗口的高度*/
f.setSize(400,330);
int xcenter=(x-350)/2;
int ycenter=(y-330)/2;
f.setLocation(xcenter,ycenter);/*显示在窗口中央*/
f.setVisible(true);
//-------------------------------------------------
jbt1.addActionListener(this);//注册监听器
jbt2.addActionListener(this);
/* f.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
}
);*/
}
//------------------------------------------------
int i=0;
public void showRecord()
{
while(i>=0)
{
ar[i][0]="";
ar[i][1]="";
ar[i][2]="";
ar[i][3]="";
ar[i][4]="";
ar[i][5]="";
i--;
}
i=0;
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
}catch(ClassNotFoundException e){System.out.println("加载驱动程序失败!");}
try{
String url = "jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=Book.mdb";//直接使用当前类目录下的数据库文件
Connection con=DriverManager.getConnection(url);
String s="select * from book ";
Statement sql=con.createStatement();
ResultSet rs=sql.executeQuery(s);
while(rs.next())
{
String bname=rs.getString(1);
String bno=rs.getString(2);
String price=rs.getString(3);
String writer=rs.getString(4);
String publish=rs.getString(5);
String indate=rs.getString(6);
ar[i][0]=bname;
ar[i][1]=bno;
ar[i][2]=price;
ar[i][3]=writer;
ar[i][4]=publish;
ar[i][5]=indate;
i++;
}
count=""+i+"";
L.setText("书库现在共有图书"+count+"本");
f.repaint();
con.close();
}catch(SQLException g)
{
System.out.println("E Code"+g.getErrorCode());
System.out.println("E M"+g.getMessage());
}
}
public void actionPerformed(ActionEvent e)
{
String cmd=e.getActionCommand();
if(cmd.equals("确定"))
{
f.hide();
}
if(cmd.equals("返回"))
f.hide();
}
public static void main(String []arg){
BookBrower a=new BookBrower();
a.showRecord();
}
}